Please help me understand the first forward difference and second forward difference. Is there any video or we link that you can suggest to me? This is with respect the study of calculus in maths..
http://www.mathsisfun.com/calculus/integration-rules.html
a forward difference is the integral to do that you increase the exopnent by one and you put a factor ofoine divided by the exponent.
y = x is my example:
first forward difference is
Y = 1/2 x^2
second forward difference is Y" = 1/2*1/3 x^3 or Y" = 1/6 x^3
if you take the differencial twice you get the original example.